Then Matthew Rabinowitz (USA, but living in Germany) told me:
"it looks like a supernode is getting nailed.. (or a bunch of them)... like a DDoS attack ... or something like it."and some minutes later he said
"something happened with a few nodes that tripped and caused a bunch of users trying to find another"Then i entered in a very long discussion with Hudson Barton (USA). We listed the following possibilities:
- A bug in the counter
- An attack on supernodes
- A general attack on the internet
- A major natural or human catastrophe (earthquake, nuclear bomb)
- Skype Staff resetting something in their servers
- Somebody blocking the IP addresses of some of the computers gathering the information from the supernodes
It was a very interesting discussion, while we were both watching the numbers going back to normality after a dip of about 1.000.000!
In fact, putting everything together, there are in our opinion two things left:
- or a DDOS attack or similar
- or Skype resetting something in their (servers / supernodes) systems
Finally, Hudson said (and i was authorized to publish this ;-):
Will we ever know?"So the theory is that at 5pm, as the boys in Estonia were getting ready to go home to their spouses (or whatever) that they reset the count servers before turning out the lights."